Machinery for charging steel or like furnaces.



P D S B E T A P A MACl-HNERY FOR CHARGING STEEL 0B LIKE FURNACE S.

(Application filed Aug. 9. 1902.}

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'No. 7l6,750. Patented Dec. 23, I902.

A. PATTERSON.

MACHINERY FOR CHARGING STEE L OB LIKE FURNACES.

. (Application film Aug. 9, 1909.) v (No Model.) 6 Sheets-Sheet 2.

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No. 7I6,75l

Patented 000.23, I902. A. PATTERSON. I MACHINERY FOB CHARGING STEEL 0R LIKE FURNACES.

(Application filed Aug. 9, 1902.)

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E I I u I N0. 7I6,750. Patented Dec. 23, I902.

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MACHINERY FOR CHARGINGlSTEEL GR LIKE FUBNACES.

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No. 716,750. Patented Dec. 23, I902.

- A. PATTERSON. I MACHINEBYFOB CHARGING STEEL 0R LIKE. FURNACES.

(Application Med Aug. 9, 1902.)

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fill No. 716,750. Patented Dec. 23, I902.

A. PATTERSON.

MACHINERY F08 CHARGING STEEL 0R LIKE FURNACES. V

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UNITED STATES PATENT Orrictn.

ANTHONY PATTERSON, OF CARDIFF, ENGLAND.

SPECIFICATION forming part of Letters Atplication filed August 9, lQOZ.

To aZZ whom, it may concern:

Be it known that LANrHoNY PATTERSON, a

Y subject of the King of Great Britain, residing at Oardiif,in the county of Glamorgan,Wales, England, have invented certain new and useful Improvements in Machinery for Charging Steel or Like Furnaces; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention consists in machinery for charging ore, scrap, and the like into furnaces employed in the manufacture of steelsuch furnaces, for example, as Siemens steelmelting furnaces and fnrnacesofother kinds, such as reheating or mill furnaces.

As is well understood, it is a practice in erecting a series or installation of steel-melting and like furnaces and also reheating-furnaces to arrange the furnaces in rows and to charge them by means of machines arranged to run on the floor of the charging house or yard. The charging-machines are brought up to the charging-boxes, which are placed on trucks and carry the substance or substances to be deposited in the furnace. The charging-box is seized by the machine and ad: vanced into the furnace, and after the box has been inverted audits contents delivered into the furnace the box is withdrawn by the machine and retired. With chargingmachines thus arranged to run on the chargingfloor the latter has to be kept clear of toolsand other appliances or paraphernalia which would obstruct the movement of the machines. Moreover,keeping the charging-floor. clear necessitates that the hand-1evers of the gas and air controlling gear or mechanism and dampers appertaining to the furnaces be located in positions inconveniently or undesirably remote. Inverting the charging-boxes in the furnaces is liable to cause fouling and consequent obstruction to withdrawal.

My improved charging machinery is, according to one arrangement thereof, illus trated in the accompanying drawings, in which- Figure 1 is a side elevation, Fig. 2 an end view, and Fig. 3 a plan on the line 02 as, Figs. 1 and 2.

On the overhead traversing carriage a, is a Patent No. 716,750, dated December 23, 1902.

Serial No 119,118 (No model-l trolley b, from which depends a frame 0. The carriage a, which is driven by the motor a, acting through the gearing a 01, a is mounted on wheels, which run on rails d, carried on girders, columns, or walls. The rails d extend lengthwise of the charging-house. The trolley b is mounted on rails e and is adapted to travel thereon transversely to the carriage a. The frame 0 carries motors Z0, 19, and q. The shaft 0?, on which one pair of the traversing wheels a of the carriage a are fixed,

is centrally driven-that is to say, the gearwheel a centered on the shaft a and by which the shaft a is rotated, is situated at or about midway between the ends of the shaft. Accordingly the driving effect is exerted at each end of the shaft a equally, and torsional strain on the shaft takes place equally as between the gear-wheel a and the traversing wheels a I The method of working the machine is as follows: The carriage a is driven along on the rails d by the motor a until theframe c, with its motors k, p, and q, is brought opposite a charging-box f, which has been previously brought on a truck g, as heretofore, to the charging-aperture h of the furnace 21, a part only of which is shown. The trolley I) is by the motor 6 advanced toward the furnace, and the box f, containing the material to be charged into the furnace 1;, is seized by a pair of grippers j, actuated by the motor is, carried on the platform Z. The motor it acts upon the grippers through gearing having ball hearings to reduce friction and also through the screw it and toggle W. The platform lrests on bearings 01, fixed to the rock-shaft m, which is supported in hearings in the frame 0. A ram or plunger 0, with a toothed rack 0' formed with it, is supported in guides 0 fixed to the under side of the plat form Z. The ram 0 is arranged to be actuated by the motor 10, acting through gearing and through the pinion o gearing with the rack. When the machine has been brought to the proper position for charging, the grippers j, previously open, are closed and grasp the neck of the box f. The ram 0 is then advanced, and its conical outer end engages in a conical socket in the pusher plate or head f, which is loose in the box f. The motor g, which is connected by the arm q to the rockshaft m, is now operated, and by means of gearing fitted with ball-bearings the box f is acted upon and is lifted off the truck 9 by the tilting of the rock-shaft m, to which the grippersj are attached by pinsj. The trolley 12 is again setin motion, and the box fis thrust into the furnace 't'. The pusher-head f is now advanced and pushes the contents of the boxfinto the furnace. Thereafter the ram 0 returns the pusher-head f to the back of the charging-box f.

At Fig. 4 is shown a detail vertical section of the pusher-head f and a partof the charging-box f. Fig. 5 is an end view, and Fig. 6 is a plan. As the pusher-head f is advanced in the boxfto eject the contents into the furnace the locking-bolt f which has two T- heads Working in inclined groovesf, provided in the neck of the box, is forced downward into engagement with a recess f provided in the ram 0. The pusher-head f thus becomes locked in the ram 0. On the return of the pusher-head f the heads of the boltf re enter the grooves f and, ascending therein, withdraw the bolt out of the recess f of the ram 0, which latter is then unlocked.

The frame 0, which, as aforesaid, depends from the trolley 19, is attached to the trunnion 'r', on which is centered a worm-wheel r, driven by the worm T and gearing actuated by the motors. The frame 0 can be turned by the gearing about through angles either to facilitate charging at angles or to avoid obstacles. In cases where itis not desired to have the frame 0 free to turn about a pivot or on a pivotthe frame 0 is directly attached to the trolley b and not by an intervening trunnion. The turning-gear is dispensed with.

At Fig. 7 is shown in elevation a modification. Fig. 8 isa sectional plan alongthe line y y, Fig. 7. This modification is for charging steel blooms, slabs, and the like into reheating-furnaces for manufacture into plates, rails, and the like. As in the previously-described machine, the frame 0 may be made free to turn or it may be fixed. In order to meet the requirement that the grippersj m ust have a greater range of movement to provide for the varying widths of the objects to be gripped, the toggle-links h have holes for connection of the grippersj to enable adj ustment to be effected. The drawing shows a slab t in the grasp of the grippers j.

At Fig. 9 is shown, in side elevation, a peel or charging instrument for charging heavy scrap. Fig. 10 is aplan of Fig. 9. In stead of a charging-box a plain tableu is employed. Thecharge is pushed off the peel by a pusher-head '2) in the same way as ore and small scrap from a box, as in the arrangement first above described with reference to Figs. 1, 2, and 3.

Fig. 11 shows a charging instrument for picking up and charginginto the furnace old ingot-molds w. The instrument in this case is a peel w, adapted for insertion in a mold ried by said frame for operating said ram,

substantially as described.

2. In machinery for charging furnaces, the combination of a suspended frame, means for moving said frame, gripping devices carried by said frame, means for operating said gripping devices, a ram provided with a separable pusher-head carried by said frame, and means on said frame for operating said ram, substantially as described.

3. In machinery for charging furnaces, an overhead traveling carriage, a movable trolley located on said carriage, a frame suspended from said trolley, means for swinging said frame in a horizontal plane, gripping devices and means for operating them carried by said frame, a ram and means for operating said ram also mounted on saidframe, substantially as described.

4. In machinery for charging furnaces, the combination of a ram, a suspended frame carrying said ram, means located on said frame for operating said ram, a separable pusherhead for said ram, and means whereby said pusher-head is locked to said ram on the forward movement of the latter, substantially as described.

5. In machinery for charging furnaces, the combination of a charging-box, a pusher-head loose in said box, a ram for operating said pusher-head, and means for locking said ram to said pusher-head, said means consisting of a bolt adapted to slide in inclined grooves and to engage in a recess in the head of the ram as the latter is advanced, substantially as described.

6. A machine for charging furnaces, comprising an overhead traversing carriage with motor for driving same, a traveling trolley mounted on the said overhead traversing carriage and operated by a motor to travel at right angles to the direction of travel of the traversing carriage, a frame depending from the trolley and carrying gripping-arms for gripping the charging-boxes, and a reciprocating ram for dislodging into the furnace the material contained in the charging-boxes; a motor for operating the saidram, a motor for operating the said grippers, and a motor for tilting the gripper-arms carried by the suspended frame, substantially as described.v

In testimony whereof I affix my signature in presence of two witnesses.

ANTHONY PATTERSON.

Witnesses:

J OHN THOMPSON, STEPHEN JOHN THOMPSON. 

